Ralphy g-Machine

iTrader: (3)

I'm new to 4th gens, but not new to LS1s per say. I'm just doing a bit of research now, as I will hopefully be picking up a 98-99 'SS in the next two weeks, once I sell my truck. One of the only mods that I will do until my '68 is done will be exhaust. I want the car to be loud, and am considering going with the SLP loudmouth, but I've heard it can be too loud, if there's such a thing. My next choice would be the Borla cat-back, or possibly a borla XR-1 with the slp exhaust, (borlamouth). Any opinions or ideas? I want the car to be loud, but not to the point where I'm getting tickets and hassled all the time, plus this will be my DD. I definitely want people to hear the LS1, though.

Thanks,
Ralph

frey51

I say go with the LM. I am very happy with it. When I get headers I might think about replacing the resonator with a XR1 but we'll see. Anyway, check out the stickey with the exhaust sounds, that will give you some idea.

Fry

MyersRacing

I would go with the GMMG. I have one of the Flowmaster catback systems on mine and it's 3" all the way and it sounds good but the more I hear the GMMG I like it even better. The loudmouth really sound good, but sounds better with a lopey cam. Just my opinion.

Ralphy g-Machine

iTrader: (3)

Thanks for the replies guys, much appreciated. I've been checking out the clips up top, and will continue to do so.

God of Thunder

Ls1sounds.com has a lot of clips too. i have the loudmouth and personally i love it. really liked the flowmaster that was one before too, just wanted something a little louder. make sure you take in to consideration your future mods when picking one though.

Hayze

iTrader: (1)

Another one here with GMMG.

If you have the money then go for it, you wont regret it.

Cost for exhaust is $700.....oval tips are extra $150

TAQuickness

iTrader: (28)

i have the slp LM and love it. When the car was running I would get a little rasp now and then, but I can live with it. My new set up will be JetHot LT's, ORY, and LM... That set up should be loud enough to scare a redneck!

Trevor_00Ws6

I have true duals and I LOVE it... one of the best exhausts you can get for a ls1

Ralphy g-Machine

iTrader: (3)

Thanks guys, I'm looking into the GMMG as well.

jrp

iTrader: (16)

your gonna get 50 billion different answers since exhaust is subjective. i personally think LM sounds like **** and GMMG is overated, but alot of people like them so to each there own. i had magnaflow and it was nice catback, but i dumped it for true duals. bottom line is hear as many different exhaust setups in person and come to your own conclusion.

Z-286speed

Another vote for true duals!

8banger

iTrader: (16)

True duals again...I really like the setup I'm doing. 2.5" all the way through, x-pipe, Flowmaster 10 series single chamber mufflers, dumped before the axle. Good stuff...loud but not too loud...has that old muscle car sound.

blkZ28spt

I vote true duals! The problem with that is that it works best if you get them with headers.Listen to as many as you can in person. I had the loudmouth for 18 months and I liked it a lot but I LOVE my duals and will NEVER have a Y-pipe again. The GMMG is nice but IMO it just costs too much for a cat-back, for the price of it you can essentially get a pair of headers AND true duals . You should be happy with the loudmouth so long as you keep the cats I think, it's really not all THAT loud.

Ralphy g-Machine

iTrader: (3)

Hey guys,

I checked out the TSP true duals, and it looks nice, the price is fair too.

Hypothetical question, considering I don't even have the car yet (still need to sell my truck) could I just cut the stock exhaust and let it dump right before the rear? Would I still pass emissions?

Am I going to pass with the LM, or TSP dual?

TIA, I don't know much about emissions testing. I'm in NY.

Z-286speed

TSP you will need to add cats, and you will not pass with out some kind of muffler(cut off). Loudmouth, you will have trouble passing if you have a a$$ hole doing your inspection. They will consider that a glass pack or something. If they do not do the sniff test, then more then likely they will not get under the car to see the mufflers.

Ralphy g-Machine

iTrader: (3)

Okay cool, I guess I'll have to find a cool guy to inspect it. Thanks.

blkZ28spt

The Loudmouth is federal emissions compliant. The only way you would have a problem passing with it is if say your county/city/etc has restrictions regarding modifiying a vehicle and making it louder. Emissions testing is just that: emissions testing. Your muffler has exactly ZERO influence on emissions. I have absolutey no problem passing with my exhuast.